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洞庭湖西岸区防护林土壤与植物微量元素含量特征

ISSN号：1673-923X
期刊名称：《中南林业科技大学学报》
时间：0
分类：S714[农业科学—林学] S727.2[农业科学—林木遗传育种;农业科学—林学]
作者机构：[1]中南林业科技大学,湖南长沙410004, [2]湖南省林业厅,湖南长沙410007, [3]南方林业生态应用技术国家工程实验室,湖南长沙410004, [4]国家重点野外科学观测研究站,湖南会同418307
相关基金：国家林业公益性行业科研专项项目（200704015 200804030）; 国家林业局重点项目（2006-11 2007-R23 2008-81）; 中德合作湖南省洞庭湖生态造林项目（1997-174）

作者：柏方敏[1,2], 田大伦[1,3], 方晰[1,3], 闫文德[1,4], 梁小翠[1,4]

关键词：生态学, 洞庭湖区, 防护林, 土壤, 植物, 微量元素含量, ecology, Dongting Lake, protection forest, soil, plant, microelement concentrations

中文摘要：

对洞庭湖西岸区4种防护林地土壤与植物中微量元素含量进行研究。结果表明：（1）环湖低丘平原封山育林和补植封山育林的水土保持林、平原湖区防护林土壤pH值为4.54~5.27,呈酸性反应;防浪护堤林土壤pH值为8.18,呈碱性反应。（2）全Cu、全Fe、全Zn以环湖低丘平原补植封山育林水土保持林土壤含量最高;全Mn、全Cd、全Ni、全Pb却以防浪护堤林土壤含量最高;全Co则以环湖低丘平原封山育林水土保持林土壤含量最高。（3）4种防护林土壤微量元素含量均表现为Fe〉Mn〉Zn〉Ni〉Cu〉Pb〉Co〉Cd,Pb、Zn、Cu和Cd含量均未超过国家规定的三级标准;各防护林群落中植物体内不同微量元素含量差异很大,同一元素在不同植物体内含量的变化范围亦很大。（4）植物对土壤中Cd的吸收能力最强,对Mn、Zn、Cu、Ni、Pb其次,对Fe最弱;木本植物青冈、冬青和山矾具有较强的Cd积累能力。研究结果可为土壤环境质量评价及防护林体系建设提供理论依据。

英文摘要：

This study investigated microelement concentration in soil and plant for four main shelterbelt types in the western bank of Dongting Lake.Results show that soil pH value was acidic（4.54~5.27） for three main shelterbelt types（e.g.FC： Forest Closure in the hilly area around Dongting lake;FCE： Forest Closure with Enrichment;PF： Protection Forest in Plains Lakes）,while soil pH value was alkaline（8.18） in Wave-break Forest（WBF）.The concentrations of total Cu,Fe,Zn were the highest in FCE,while the concentrations of Mn、Cd、Ni、Pb were the highest in WBF,and the concentration of total Co in FC was the highest.The microelement concentrations for our main shelterbelt types were ranked in the order of FeMnZnNiCuPbCoCd.The concentrations of total Pb,Zn,Cu and Cd were not higher than the third grade State Standards.The different element contents of plants vary greatly in forest communities and the same element content in different plants ranges widely.Plants had the strongest accumulation ability of Cd,the second of Mn,Zn,Cu,Ni,Pb,while the weakest of Fe.Cyclobalanopsis glauca,Ilex chinensis,Symplocos sumuntia had the strongest accumulation ability of Cd.These results provide a theoretical basis for soil environment quality evaluation and construction of shelter-forest system.

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